Bradford White 40-gallon Gas Water Heaters - Comparison

(If you purchase a product or service through links on this page, I receive a small commission at no cost to you as an Amazon Associate/affiliate).

A review of the Bradford White 40-gallon gas water heaters by using the comparison chart to find the high efficient, low NOx, high recovery models, and other popular types.

Need professional help with your water heater?
Get free quotes today!

Contact a Plumber!

Technical data comparison

Specs. --------- Model	Input (Btu) x1000	First Hour Delivery (GPH)	Recovery Rate (90F) (GPH)	Efficie- ncy	Approx. Height/ Type (Inch)	Vent Type	Warr anty
Energy Saver FVIR
M-I-40T6FBN	40 36	76	42 38	79%	60	A	6, 10
M-I-403S6FBN	40 38	74	42 40	79%	50	A	6, 10
M-I-404T6FBN	50 48	87	53 50	79%	61	A	6, 10
Energy Saver High EF FVIR
M-4-40T6FBN	40 36	76	43 38	79%	60	A	6, 10
M-4-403S6FBN	40 38	74	43 40	79%	50	A	6, 10
Energy Saver FVIR Extra Recovery
M-1- XR403S6FBN	40 38	74	43 40	79%	49	A	6, 10
Super High EF Energy Saver
HE-4-40S6FBN	38	72	40	78%	56	A	6, 10
Gas Damper Energy Saver High EF
D-4-403S6FBN	38	72	40	78%	56	FD	6, 10
Energy Saver TTW1 FVIR
M-1-TW- 40S6FBN	40 38	72	43 41	79%	47	PV	6, 10
Energy Saver TTW High EF
M-4- TW40T6FBN	40 38	72	43 41	78%	67	PV	6, 10
Energy Saver FVIR PDX1
PDX1-40S6FBN	40 38	72	43 41	79%	59	PDV	6, 10
Energy Saver FVIR PDX4
PDX4-40S6FBN	40 38	70	43 41	78%	59	PDV	6, 10
Energy Saver FVIR Direct Vent
DS1-40S6FBN	40 36	73	41 39	79%	64	DV	6, 10
Energy Saver Manufactured Home WH
M-I-MS40T6LX	30	59	31	78%	59	DV	6, 10
M-I-MH40T6FLX	34	59	35	78%	60	A	6, 10
Energy Saver FVIR Ultra Low NOx WH
U1-403S6FRN	40	72	42	79%	50	A	6, 10
U1-40T6FRN	40	77	42	79%	59	A	6, 10
U1-404T6FRN	50	86	53	79%	61	A	6, 10
Energy Saver FVIR Ultra Low NOx High Efficiency WH
U4-40T6FRN	40	77	43	79%	59	A	6, 10
U4-403S6FRN	40	72	43	79%	50	A	6, 10
Energy Saver FVIR Ultra Low NOx Extra Recovery WH
U1-XR- 403S6FRN	40	72	43	78%	50	A	6, 10
Energy Saver FVIR TTW1 Ultra Low NOx WH
U-1-TW- 40S6FRN	40	72	43	80%	57	PV	6, 10
Energy Saver TTW High EF Ultra Low NOx WH
U-4-TW- 40T6FRN	40	72	43	78%	67	PV	6, 10
Energy Direct Vent Ultra Low NOx WH
UDS1-40S6FRN	38	73	41	78%	63	DV	6, 10

Vent type:

A-Atmospheric, PV-Power Vent, DV-Direct Vent, PDV-Power Direct Vent, FD-Flue Damper

Gas type:

Every model that ends with BN is natural gas model. Change BN to SX for propane type. (Example: M-I-30T6FBN is natural gas, M-I-30T6FSX is propane water heater). On some models change X to N (example: M-I-MS30T6LX to M-I-MS30T6LN) to order natural gas heater. Models that end with FRN, such as UDS1-40S6FRN, are for natural gas only.

If the table cell has two values... upper values are for natural gas while lower values are for propane.

Models with the energy factor, EF, of 0.67 and over are Energy Star.

Features comparison

Features --------- Model	Anode Rod	Defender Safety System	ICON system	Hydrojet Self Cleaning system	Low NOx Design	Igniter
Energy Saver FVIR
M-I-40T6FBN	1 (Mg)	Yes	Yes	Yes	No	Piezo
M-I-403S6FBN	1 (Mg)	Yes	Yes	Yes	No	Piezo
M-I-404T6FBN	1 (Mg)	Yes	Yes	Yes	No	Piezo
Energy Saver High EF FVIR
M-4-40T6FBN	1 (Mg)	Yes	Yes	Yes	No	Piezo
M-4-403S6FBN	1 (Mg)	Yes	Yes	Yes	No	Piezo
Energy Saver FVIR Extra Recovery
M-1-XR403S6FBN	1 (Mg)	Yes	Yes	Yes	No	Piezo
Super High EF Energy Saver
HE-4-40S6FBN	1 (Mg)	Yes	Yes	Yes	No	Piezo
Gas Damper Energy Saver High EF
D-4-403S6FBN	1 (Mg)	Yes	Yes	Yes	No	Piezo
Energy Saver TTW1 FVIR
M-1-TW-40S6FBN	1 (Mg)	Yes	Yes	Yes	No	Electr.
Energy Saver TTW High EF
M-4-TW40T6FBN	1 (Mg)	Yes	Yes	Yes	No	Piezo
Energy Saver FVIR PDX1
PDX1-40S6FBN	1 (Mg)	Yes	Yes	Yes	No	Electr.
Energy Saver FVIR PDX4
PDX4-40S6FBN	1 (Mg)	Yes	Yes	Yes	No	Electr.
Energy Saver FVIR Direct Vent
DS1-40S6FBN	1 (Mg)	Yes	Yes	Yes	No	Electr.
Energy Saver Manufactured Home WH
M-I-MS40T6LX	1 (Mg)	No	Yes	Yes	No	Piezo
M-I-MH40T6FLX	1 (Mg)	No	Yes	Yes	No	Piezo
Energy Saver FVIR Ultra Low NOx WH
U1-403S6FRN	1 (Mg)	No	Yes	Yes	Yes	Piezo
U1-40T6FRN	1 (Mg)	No	Yes	Yes	Yes	Piezo
U1-404T6FRN	1 (Mg)	No	Yes	Yes	Yes	Piezo
Energy Saver FVIR Ultra Low NOx High Efficiency WH
U4-40T6FRN	1 (Mg)	No	Yes	Yes	Yes	Piezo
U4-403S6FRN	1 (Mg)	No	Yes	Yes	Yes	Piezo
Energy Saver FVIR Ultra Low NOx Extra Recovery WH
U1-XR-403S6FRN	1 (Mg)	No	Yes	Yes	Yes	Piezo
Energy Saver FVIR TTW1 Ultra Low NOx WH
U-1-TW-40S6FRN	1 (Mg)	No	Yes	Yes	Yes	Piezo
Energy Saver TTW High EF Ultra Low NOx WH
U-4-TW-40T6FRN	1 (Mg)	No	Yes	Yes	Yes	Piezo
Energy Direct Vent Ultra Low NOx WH
UDS1-40S6FRN	1 (Mg)	No	Yes	Yes	Yes	Piezo

Every Bradford White gas water heater from the above text uses the Hydrojet system to reduce or prevent the sediment build-up in the heater's tank. This is done by designing the dip tube to create the turbulent water flow inside the tank.

The ICON system is an advanced feature, and it combines the temperature control, diagnostic codes, system functions, controller, and the LCD display.

Get HELP for your water heater!